avfilter_next    1561 cmdutils.c         while ((filter = avfilter_next(filter))) {
avfilter_next     494 libavfilter/avfilter.c     while ((f = avfilter_next(f)))
avfilter_next     571 libavfilter/avfilter.c     while (prev && (f = avfilter_next(f)))
avfilter_next     580 libavfilter/avfilter.c     while ((f = avfilter_next(f)))
avfilter_next    1010 libavfilter/avfilter.h const AVFilter *avfilter_next(const AVFilter *prev);